Ultra Wideband Antennas

4Developments in Ultra Wideband Antenna Theory

Contents

4.1 Introduction

4.2 UWB Bandwidth

4.3 Preliminary Concepts

4.4 Biconical Antenna

4.5 Planar Monopole Structure as a Basic Element of UWB Antenna Theory

4.6 Theory of Planar Monopole Antenna from a Microstrip Antenna

4.6.1 Microstrip antenna

4.6.2 Planar monopole antenna

4.7 Planar Monopole Antenna from a Cylindrical Monopole Antenna

4.7.1 Resonance frequency

4.7.2 Lower cut-off frequency for different planar antenna shapes

4.7.2.1 Example 1

4.7.2.2 Example 2

4.7.2.3 Example 3

4.7.2.4 Example 4

4.8 Some Factors That Influence UWB Antenna Performance

4.8.1 Influence of the radiator

4.8.2 Ground plane

Bibliography

4.1 Introduction

As has been shown in previous chapters, there are different ...